Adjustable grouting range assembled high pressure grouting soil nail

Abstract

The utility model discloses an adjustable assembly type high pressure grouting soil nail of grouting range, including the coaxial line setting grouting outer tube and grouting inner tube, one end of grouting inner tube stretches into grouting outer tube, and the other end extends away from grouting outer tube, adopt threaded connection between grouting inner tube stretch into grouting outer tube part and grouting outer tube, the pipe wall of grouting inner tube is arranged with grouting hole, the outer baffle ring of end face of grouting inner tube is sleeved with grouting outer tube, and one end of grouting inner tube not stretching into grouting outer tube is equipped with the inner baffle of closing pipe orifice. The soil nail makes the internal formation closed chamber to the orifice prepositioned on the soil, causes to make grouting when can pressurize, accelerates the grouting speed, can make the grout infiltration into the soil rate to improve, and the combination strength between the soil after solidification is higher, and the overall function is perfect, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and more specifically, it relates to a prefabricated high-pressure grouting soil nail with adjustable grouting range. Background Technology

[0002] Traditional grouting soil nails require drilling holes in the soil surface before prefabrication and use. Reinforcing bars are then placed inside the holes before grouting. Because the hole openings are not sealed, pressure cannot be applied during grouting; otherwise, the grout will spray out. This results in slow grouting speed, low grout penetration into the soil, insufficient bonding strength after solidification, and poor overall performance. Therefore, this invention proposes a prefabricated high-pressure grouting soil nail with an adjustable grouting range. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a prefabricated high-pressure grouting soil nail with an adjustable grouting range.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: The present utility model relates to an adjustable grouting range prefabricated high-pressure grouting soil nail, which includes a grouting outer pipe and a grouting inner pipe arranged coaxially. One end of the grouting inner pipe extends into the grouting outer pipe, and the other end extends away from the grouting outer pipe. The part of the grouting inner pipe that extends into the grouting outer pipe is threadedly connected to the grouting outer pipe. Grouting holes are arranged on the pipe wall of the grouting inner pipe. An outer retaining ring with its end face abutting against the grouting outer pipe is fitted on the grouting inner pipe. An inner baffle is provided at the end of the grouting inner pipe that does not extend into the grouting outer pipe to close the pipe opening.

[0005] The present invention is further configured such that the outer contours of the outer retaining ring and the inner baffle are both circular; the outer diameter of the outer retaining ring is larger than the outer diameter of the grouting outer pipe, and the outer diameter of the inner baffle is larger than the outer diameter of the grouting outer pipe.

[0006] The present invention is further configured such that the outer diameter of the outer retaining ring is equal to the outer diameter of the inner retaining plate.

[0007] The present invention is further configured such that: the inner grouting tube is provided with a guide sleeve that moves axially relative to the outer retaining ring, and the outer retaining ring is connected to the guide sleeve.

[0008] The present invention is further configured such that the inner baffle is detachably connected to the grouting inner pipe.

[0009] The present invention is further configured such that: the end of the inner baffle facing the grouting inner pipe is provided with a screw plug extending into the pipe, and the screw plug is threadedly connected to the grouting inner pipe.

[0010] In summary, this utility model has the following beneficial effects:

[0011] 1. The pre-placed holes in the soil are sealed to form a closed chamber, which allows for pressurization during grouting, speeding up the grouting process and increasing the grout penetration rate into the soil. After solidification, the grout has a stronger bond with the soil.

[0012] 2. Multiple components are detachable, occupying little space before assembly and making it easier to transport.

[0013] 3. By selecting grouting inner tubes of different lengths, the grouting depth range of soil nails can be effectively adjusted, making it widely applicable and highly adaptable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a partial structural schematic diagram of the present invention;

[0016] Figure 3 This is a schematic diagram illustrating the structure of the outer retaining ring and the guide sleeve of this utility model;

[0017] Figure 4 This is a schematic diagram illustrating the structure of the inner baffle and the screw plug of this utility model. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0019] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0020] Example 1

[0021] See Figures 1 to 4 As shown in the figure, the prefabricated high-pressure grouting soil nail with adjustable grouting range involved in this embodiment includes a grouting outer pipe 1 and a grouting inner pipe 2 arranged coaxially. One end of the grouting inner pipe 2 extends into the grouting outer pipe 1, and the other end extends away from the grouting outer pipe 1. The part of the grouting inner pipe 2 that extends into the grouting outer pipe is threadedly connected to the grouting outer pipe 1. Grouting holes 3 are arranged on the pipe wall of the grouting inner pipe 2. An outer retaining ring 4 with its end face abutting against the grouting outer pipe is fitted on the grouting inner pipe 2. An inner baffle 5 that closes the pipe opening is provided at the end of the grouting inner pipe 2 that does not extend into the grouting outer pipe.

[0022] Furthermore, the outer contours of both the outer baffle 4 and the inner baffle 5 are circular; the outer diameter of the outer baffle 4 is larger than the outer diameter of the grouting outer pipe 1, and the outer diameter of the inner baffle 5 is larger than the outer diameter of the grouting outer pipe 1.

[0023] Furthermore, the outer diameter of the outer retaining ring 4 is equal to the outer diameter of the inner baffle 5.

[0024] Furthermore, the grouting inner pipe 2 is provided with a guide sleeve 6 that moves axially relative to the outer retaining ring 4 connected to the guide sleeve 6.

[0025] Furthermore, the inner baffle 5 is detachably connected to the grouting inner pipe 2.

[0026] Furthermore, the inner baffle 5 is provided with a screw plug 7 extending into the grouting inner tube at one end, and the screw plug 7 is threadedly connected to the grouting inner tube 2.

[0027] In this implementation plan, firstly, a drilling tool or equipment is used to drill holes in the soil surface where soil nails need to be installed. The diameter of the hole is equal to the outer diameter of the outer retaining ring 4 (or the outer diameter of the inner baffle 5). Then, a grouting inner tube 2 of appropriate length is selected, and one end is threaded onto the grouting outer tube 1. Then, the outer retaining ring 4 carrying the guide sleeve 6 is installed until its end face abuts against the grouting outer tube 1. Then, the inner baffle 5 is threaded on and installed. The assembled soil nail is then inserted into the hole drilled in the soil, so that the inner baffle 5 abuts against the bottom of the hole and the outer retaining ring 4 seals the hole opening. Finally, high-pressure grouting is performed through the grouting outer tube 1. The cement grout enters along the pipe and flows out through the grouting hole 3, flowing to the area outside the grouting inner tube 2 and inside the soil hole. Because the grouting is high-pressure grouting, the cement grout forms a tight bond with the soil.

[0028] The prefabricated high-pressure grouting soil nail with adjustable grouting range involved in this utility model forms a closed chamber by sealing the pre-set orifices in the soil. This allows for pressurization during grouting, which accelerates the grouting speed and increases the grout penetration rate into the soil, resulting in a stronger bond between the grout and the soil after solidification. Furthermore, the multiple components are detachable, occupying little space before assembly and making it easier to transport. By selecting grouting inner tubes of different lengths, the grouting depth range of the soil nail can be effectively adjusted. It has a wide range of applications, strong adaptability, complete overall functions, and strong practicality.

[0029] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0030] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A prefabricated high-pressure grouting soil nail with adjustable grouting range, characterized in that, It includes an outer grouting pipe and an inner grouting pipe arranged coaxially. One end of the inner grouting pipe extends into the outer grouting pipe, and the other end extends away from the outer grouting pipe. The portion of the inner grouting pipe extending into the outer grouting pipe is threadedly connected to the outer grouting pipe. Grouting holes are arranged on the wall of the inner grouting pipe. An outer retaining ring is fitted on the inner grouting pipe, with its end face abutting against the outer grouting pipe. An inner baffle is provided at the end of the inner grouting pipe that does not extend into the outer grouting pipe to close the pipe opening.

2. The prefabricated high-pressure grouting soil nail with adjustable grouting range according to claim 1, characterized in that, The outer contours of both the outer retaining ring and the inner baffle are circular; the outer diameter of the outer retaining ring is larger than the outer diameter of the grouting outer pipe, and the outer diameter of the inner baffle is larger than the outer diameter of the grouting outer pipe.

3. The prefabricated high-pressure grouting soil nail with adjustable grouting range according to claim 2, characterized in that, The outer diameter of the outer retaining ring is equal to the outer diameter of the inner retaining plate.

4. The prefabricated high-pressure grouting soil nail with adjustable grouting range according to any one of claims 1-3, characterized in that, The grouting inner pipe is provided with a guide sleeve that moves axially relative to the outer retaining ring, which is connected to the guide sleeve.

5. The prefabricated high-pressure grouting soil nail with adjustable grouting range according to claim 1, characterized in that, The inner baffle is detachably connected to the grouting inner pipe.

6. The prefabricated high-pressure grouting soil nail with adjustable grouting range according to claim 5, characterized in that, The inner baffle is provided with a screw plug extending into the grouting inner pipe at one end, and the screw plug is threadedly connected to the grouting inner pipe.

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